Routing-machine



(No Model.)

D. A. SEARS. ROUTING MACHINE.

Patented June 25, 1889.

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DELOS A. SEARS, OF ROCKFORD, ILLINOIS.

ROUTING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 405,916, dated June 25, 1889.

Application filed June 19, 1888.

To all whom it may concern:

Be it known that I, DELOS A. SEARS, a citizen of the United States, residing at Rockford, in the county of IVinnebago and State of Illinois, have invented a certain new and useful Improvement in Routing-Machines, of which the following is a specification.

The object of this invention is to produce a machine for routing at different depths for the use of wood-engravers, wood-carvers, and other artisans; and the invention consists of certain new and useful features of construction and combinations of parts, hereinafter described, and pointed out in the claims.

Referring to the accompanying drawings, which form a part of this specification, Figure 1 is an isometric view of my improved machine. Fig. 2 is a view of a front elevation of the same, having a longitudinal central vertical partial section therethrough. Fig. 3 is a plan view of the upper adjustingspring of the machine. Fig. Al is an under side view of the lower counterpart adjustingspring of the same. Fig. 5 is a detailed isometric view of a portion of a set-screw to be described hereinafter. Fig. 0 is a detailed isometric view of the head portion of the spring shown in Figs. 1, 2, and 3.

Like letters of reference indicate corresponding parts throughout the several views.

A is a table for supporting the machine, and may be mounted 011 legs or otherwise to suit the convenience of the operator.

B is the frame of the machine, and consists, essentially, of a base B, standard 13, the horizontal arms B B B and a vertical rest 13, connecting the arms B B together. This frame can be most advantageously constructed by casting the same integral. The parts B, B B and are provided with vertical cylindrical openings 0 O O and G which serve as bearings for portions of the machine to be described hereinafter. The part B is also provided upon the upper side thereof with a horizontal lug C, a slot 0, and threaded cylindrical passage 0 the two latter extending vertically therethrough.

D is a vertical shaft mounted in the bearings C 0' in the arms B B capable of endwise motion and adjustment, having a vertical socket in the lower end thereof to hold Serial No. 277,603. (No model.)

a routing-tool 1), and provided with an outwardly-proj ecting annular flange D and a collar D.

E is an adjusting-spring having a curved head E upon the upper side thereof, which has a Vertical circular opening E therein to admit the upper portion of the shaft D.

E is a counterpart of the spring E, and has a head E on the under side thereof, which is provided with a vertical circular opening E extcndin g therethrough, also for admitting the upper portion of the shaft D. The joint operation of the adjusting-spring E E is to hold the routing-tool D normally in contact with its work while cutting, and not to hold it normally out of engagement therewith, as in other routing-machines. The advantages of having the routing-tool held normally in contact with its work are, that the tool can be more readily acted upon and kept under better control by the operator than when it is held normally out of contact with its work.

E is a metallic disk secured to the under side of the spring E having shallow centrallyintersecting grooves E therein. The springs E E are securely fastened to the lug O of the frame B by means of the cross-piece F and screws F.

G is a horizontal fast pulley having a groove in the periphery thereof to admit a belt G.

G G are upper and lower bosses of the pulley G.

H is a set-screw for regulating the springs E E and the parts supported 'by the same, having a chisel-edge H on the upper end thereof to adapt it to engage with the grooves E in the disk E", in order to prevent the screw H from being loosened or turned by the vibrations of the machine while in operation.

I is a lever-cam, consisting of the cam I and handle 1 I is a horizontal p intle upon which the levercam Iis mounted in the slot 0 in the arm B J is a vertical shaft mounted in the bearings O C in the base B and arm B and provided with horizontal fast pulleys K K, having grooves K K in the peripheries of the same to admit bolts, the former being occupied by the belt G. Power to propel the machine is applied to'the pulley K.

In order to rout any outer portion of a block,

, as L, to a uniform depth, grasp the rest B with the fingers of the left hand and engage the lever-cam I with the thumb of the same hand and press it in the direction indicated by the dotted lines as of Fig. 2, whereupon all the parts resting upon the cam I will be carried upward, as indicated by the dotted'lines 00 m Next turn up the set-screw H until the routing-tool D shall penetrate the block L to the desired depth and release the lever-cam I. Then apply power to the pulley K and guide the block upon the table A with the hand, and any desired areas, as L L of uniform depth may be routed in the'block L.

Whenever it is desired to rout the outer portion of any block, as M, in areas increasing or decreasing in depth,the operator turns the set-screw H downward until the flange D rests upon the arm B of the frame, and by means of the lever-cam I gradually lowers or raises, according as he desires to rout to a greater or a less depth, the revolving shaft D and routing-tool D.

I claim-- 1 In combination, a suitable machineframe, a vertical shaft mounted in bearings in said frame and capable of endwise motion and adjustment, the adj ustingrsprings secured to said frame and connected with said shaft in such a manner as to press the same downward, and a lever-cam mounted in said frame engaging with said springs, and adapted to raise and lower them and the shaft connected withthe same, substantially as described, and for the purpose specified.

2. In a routing-machine, the combination, with a frame B, of avertical shaft D, mounted in bearings in said frame and being capable of endwise motion and adjustment, the adjusting-springs E E secured to the frame B and connected with the shaft D in such a manner as to press it downward, alever-cam for regulating the said springs and the parts supported by the same, and suitable accessory mechanism for operating said machine, substantially as set forth.

lDELOS A.-SEARS.-

Witnesses:

F, BleALow,

L. L. MORRISON. 

